(IDEX Online) - Bruce Cleaver is stepping down from his remaining roles with De Beers, after quitting as CEO last February.He will no longer serve as co-chairman of the De Beers' board of directors and is resigning from the board of Element Six, its lab grown company."The focus of Bruce's role on these boards was to enable a smooth transition of leadership to Al Cook," said De Beers."Bruce also supported the finalisation of the commercial negotiations with the Government of the Republic of Botswana (GRB). "With the leadership transition complete and with De Beers and GRB having signed Heads of Terms for the new agreements."Bruce has delivered on those objectives and so has stepped down from the boards of directors."Cleaver, who was CEO from 2016, will stay on in an advisory capacity. He shared the chairman position with Duncan Wanblad, CEO of De Beers parent company Anglo American. Wanblad will remain as sole chair of the De Beers board.Pic shows Bruce Cleaver